Na mgbakwunye na mgbochi na corrosion, osisi mgbọrọgwụ bụ nnukwu nsogbu maka. Mgbọrọgwụ site na osisi dị nso nwere ike ịpụ na ọkpọkọ, na-akpata cracks na mgbochi. Nnyocha oge niile nwere ike inye aka nweta nsogbu ndị nwere ike ime tupu ha aka njọ. If you find that tree roots are a problem, you can hire a professional service to remove them and repair any damage.